When using the UI to build an extension, it creates two construction sites, and counts them as such in the UI, preventing you from placing them all. 

Maxion reported the issue appears to be in the public server as well, so I suspect this may be a UI bug in the latest client release. 

Running on Windows 7. Throws an error whenever I click a room. Everything appears to work out fine in the client, but in the Server under "backend > processes" this error is generated. I have yet to place a spawn, I was inspecting rooms to find a good spawn location. If i'm already viewing a room and click the border buttons to scroll to adjacent rooms, the error is not generated.

Unhandled rejection: Error: Can't set headers after they are sent.
 at ServerResponse.OutgoingMessage.setHeader (_http_outgoing.js:344:11)
 at ServerResponse.header (C:\Program Files (x86)\Steam\steamapps\common\Screeps\server\modules\backend\node_modules\express\lib\response.js:719:10)
 at ServerResponse.send (C:\Program Files (x86)\Steam\steamapps\common\Screeps\server\modules\backend\node_modules\express\lib\response.js:164:12)
 at ServerResponse.json (C:\Program Files (x86)\Steam\steamapps\common\Screeps\server\modules\backend\node_modules\express\lib\response.js:250:15)
 at C:\Program Files (x86)\Steam\steamapps\common\Screeps\server\modules\backend\node_modules\q-json-response\q-json-response.js:17:14
 at _rejected (C:\Program Files (x86)\Steam\steamapps\common\Screeps\server\modules\backend\node_modules\q\q.js:844:24)
 at C:\Program Files (x86)\Steam\steamapps\common\Screeps\server\modules\backend\node_modules\q\q.js:870:30
 at Promise.when (C:\Program Files (x86)\Steam\steamapps\common\Screeps\server\modules\backend\node_modules\q\q.js:1122:31)
 at Promise.promise.promiseDispatch (C:\Program Files (x86)\Steam\steamapps\common\Screeps\server\modules\backend\node_modules\q\q.js:788:41)
 at C:\Program Files (x86)\Steam\steamapps\common\Screeps\server\modules\backend\node_modules\q\q.js:604:44

Minor thing, but upon spawning, it asks if you have taken the tutorial. I clicked yes. It then warned me I have selected a spawn outside the novice area.

I clicked 'Take me to the novice area' and it centered on the large clump of red SK rooms in the middle of the map.

Cosmetic issue, but I thought I would send it up.

Perfect, that works, thank you!

I tried launching the server on my home computer and opening the client on another computer and it threw a "You're already playing Screeps on another computer", lol. Thanks for the quick response!

Playing on Windows 7.

Once I launch the Dedicated Server on Steam, i'm unable to launch the base game after that - it switches focus to the server window. Steam believes the game is already running. 

I understand this is to help the market, and I agree with Dissi that this is a good change for Minerals, to make them more valuable.

But as it is, it requires energy for literally everything in this game - you're nerfing energy income while the existing upkeep and production costs remain the same, which is going to be difficult.

Additionally, the energy costs to perform terminal transactions is going to be a huge limiter still. Which reduced energy income there will be even less reason to use the market, especially more than a few rooms away - and frankly, if it's in the distance that I could ship it with creeps, I feel like it defeats the point of having a market. 

Ah, sorry! You're right, soon as I hit the web version I found it. It just hasn't shown up in my steam client view yet. Thank you!

Hopefully this is a small and easy change.

When viewing the "My orders" section of the market, it lists several fields, including the resource type - which is presently just a plain text field. Would it be possible to hyperlink that to the resource page, IE: 

If you have a Buy or Sell order up for Utrium, and you click the word utrium in the table, it would hyperlink you to:
https://screeps.com/a/#!/market/all/U